New exact coherent states in channel flow

Darren P. Wall, Masato Nagata

研究成果: Contribution to conferencePaper査読

抄録

Three spatially periodic travelling wave exact coherent states are presented for channel flow. Two of the flows, which are asymmetric with respect to the channel centreplane, are derived by homotopy from solutions for channel flow subject to a spanwise rotation investigated by [1]. The third flow satisfies a half-turn rotational symmetry about a point on the channel centreplane, and turns out to be the flow from which one of the asymmetric flows bifurcates in a symmetry breaking bifurcation. One of the asymmetric flows is found to substantially reduce the value of the lowest Reynolds number at which exact solutions are known to exist down to 665.

本文言語英語
出版ステータス出版済み - 2015
外部発表はい
イベント15th European Turbulence Conference, ETC 2015 - Delf, オランダ
継続期間: 8 25 20158 28 2015

会議

会議15th European Turbulence Conference, ETC 2015
Countryオランダ
CityDelf
Period8/25/158/28/15

All Science Journal Classification (ASJC) codes

  • Atmospheric Science
  • Geophysics
  • Astronomy and Astrophysics
  • Acoustics and Ultrasonics

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